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Anomaly detection aims to find instances that are considered unusual and is a fundamental problem of data science. Recently, deep anomaly detection methods were shown to achieve superior results particularly in complex data such as images.…

机器学习 · 计算机科学 2021-01-01 Hongjing Zhang , Ian Davidson

We propose an algorithm to denoise speakers from a single microphone in the presence of non-stationary and dynamic noise. Our approach is inspired by the recent success of neural network models separating speakers from other speakers and…

声音 · 计算机科学 2018-05-01 Jeff Hetherly , Paul Gamble , Maria Barrios , Cory Stephenson , Karl Ni

Enhancing the visibility in extreme low-light environments is a challenging task. Under nearly lightless condition, existing image denoising methods could easily break down due to significantly low SNR. In this paper, we systematically…

图像与视频处理 · 电气工程与系统科学 2021-08-05 Kaixuan Wei , Ying Fu , Yinqiang Zheng , Jiaolong Yang

Many types of anomaly detection methods have been proposed recently, and applied to a wide variety of fields including medical screening and production quality checking. Some methods have utilized images, and, in some cases, a part of the…

计算机视觉与模式识别 · 计算机科学 2018-10-08 Minori Narita , Daiki Kimura , Ryuki Tachibana

Object detection can localize and identify objects in images, and it is extensively employed in critical multimedia applications such as security surveillance and autonomous driving. Despite the success of existing object detection models,…

密码学与安全 · 计算机科学 2024-07-24 Youqian Zhang , Chunxi Yang , Eugene Y. Fu , Qinhong Jiang , Chen Yan , Sze-Yiu Chau , Grace Ngai , Hong-Va Leong , Xiapu Luo , Wenyuan Xu

Software vulnerabilities (SVs) have become a common, serious, and crucial concern to safety-critical security systems. That leads to significant progress in the use of AI-based methods for software vulnerability detection (SVD). In…

密码学与安全 · 计算机科学 2024-04-16 Van Nguyen , Xingliang Yuan , Tingmin Wu , Surya Nepal , Marthie Grobler , Carsten Rudolph

Speaker verification (SV) has recently attracted considerable research interest due to the growing popularity of virtual assistants. At the same time, there is an increasing requirement for an SV system: it should be robust to short speech…

音频与语音处理 · 电气工程与系统科学 2020-10-07 Youngmoon Jung , Yeunju Choi , Hyungjun Lim , Hoirin Kim

Environmental sound classification (ESC) is a challenging problem due to the complexity of sounds. The ESC performance is heavily dependent on the effectiveness of representative features extracted from the environmental sounds. However,…

声音 · 计算机科学 2019-07-05 Zhichao Zhang , Shugong Xu , Tianhao Qiao , Shunqing Zhang , Shan Cao

Robust efficient loop closure detection is essential for large-scale real-time SLAM. In this paper, we propose a novel unsupervised deep neural network architecture of a feature embedding for visual loop closure that is both reliable and…

机器人学 · 计算机科学 2018-05-28 Nate Merrill , Guoquan Huang

The nonuniform and growing impact of adversarial noise across the layers of deep neural networks has been used in the literature, without a formal mathematical justification, to detect adversarial inputs and improve robustness. In this…

机器学习 · 计算机科学 2026-05-05 Furkan Mumcu , Yasin Yilmaz

Sound Event Detection (SED) detects regions of sound events, while Speaker Diarization (SD) segments speech conversations attributed to individual speakers. In SED, all speaker segments are classified as a single speech event, while in SD,…

音频与语音处理 · 电气工程与系统科学 2024-09-16 Yidi Jiang , Ruijie Tao , Wen Huang , Qian Chen , Wen Wang

Modern intrusion detection systems (IDSes) for virtualized environments are deployed in the virtualization layer with components inside the virtual machine monitor (VMM) and the trusted host virtual machine (VM). Such IDSes can monitor at…

密码学与安全 · 计算机科学 2014-10-07 Aleksandar Milenkoski , Samuel Kounev , Alberto Avritzer , Nuno Antunes , Marco Vieira

Convolution-based unlearnable examples (UEs) employ class-wise multiplicative convolutional noise to training samples, severely compromising model performance. This fire-new type of UEs have successfully countered all defense mechanisms…

计算机视觉与模式识别 · 计算机科学 2024-12-11 Minghui Li , Xianlong Wang , Zhifei Yu , Shengshan Hu , Ziqi Zhou , Longling Zhang , Leo Yu Zhang

Deep neural networks (DNNs) are vulnerable to backdoor attacks, where an attacker manipulates a small portion of the training data to implant hidden backdoors into the model. The compromised model behaves normally on clean samples but…

密码学与安全 · 计算机科学 2026-02-20 Ting Qiao , Yingjia Wang , Xing Liu , Sixing Wu , Jianbin Li , Yiming Li

In this paper we present a research on identification of audio recording devices from background noise, thus providing a method for forensics. The audio signal is the sum of speech signal and noise signal. Usually, people pay more attention…

声音 · 计算机科学 2016-04-28 Simeng Qi , Zheng Huang , Yan Li , Shaopei Shi

Reliable anomaly detection is essential for ensuring the safety of autonomous robots, particularly when conventional detection systems based on vision or LiDAR become unreliable in adverse or unpredictable conditions. In such scenarios,…

机器人学 · 计算机科学 2025-05-12 Yizhuo Yang , Jiulin Zhao , Xinhang Xu , Kun Cao , Shenghai Yuan , Lihua Xie

The detection of previously unseen network attacks remains a major challenge for intrusion detection systems. Although supervised learning methods often perform well on known attack classes, they are limited when new attack types are not…

密码学与安全 · 计算机科学 2026-05-22 Saif Alzubi , Frederic Stahl

Deep learning (DL) has emerged as a crucial tool in network anomaly detection (NAD) for cybersecurity. While DL models for anomaly detection excel at extracting features and learning patterns from data, they are vulnerable to data…

Insider attacks are one of the most challenging cybersecurity issues for companies, businesses and critical infrastructures. Despite the implemented perimeter defences, the risk of this kind of attack is still very high. In fact, the…

密码学与安全 · 计算机科学 2021-09-07 Efthimios Pantelidis , Gueltoum Bendiab , Stavros Shiaeles , Nicholas Kolokotronis

Environmental sound classification (ESC) is a challenging problem due to the complexity of sounds. The classification performance is heavily dependent on the effectiveness of representative features extracted from the environmental sounds.…

声音 · 计算机科学 2020-07-15 Zhichao Zhang , Shugong Xu , Shunqing Zhang , Tianhao Qiao , Shan Cao